#include <stdio.h>
int add(int a,int b){
    int ret;
    ret = a + b;
    return ret;
}
int main() {
    int a,b,ret;
    int *p;
    a = 5;
    p = &a;
    b = *p +2;
    ret = add(a,b);
    printf("add result = %d\n",ret);
    FILE *fp;
    return 0;
}
